Zool WHDLoad Fix please - Page 5

ross · 07 August 2018, 20:04

Quote:

Originally Posted by modrobert

I figured out what to patch for infinite lives, maybe it will help ross with the slave.

Actually I had not yet searched for the trainer's mem location so thanks modrobert

However, I will not look at it now

StingRay · 08 August 2018, 09:10

Quote:

Originally Posted by modrobert

I figured out what to patch for infinite lives, maybe it will help ross with the slave.

The address to patch after Zool AGA is running under WHDLoad is $D0FE, look for #$53B9 0002 23D4 6A00, patch with #$4E71 4E71 4E71 6000.

In effect replacing this machine code...

Code:

SUBQ.L #1,($223D4)
BPL.W $6CCA

...with this...

Code:

NOP
NOP
NOP
 BRA.W $6CCA

Better approach would be to change the subq.l #1 instruction to tst.l, that way you only have to change 1 byte and it's also easily possible to toggle that option on or off.

modrobert · 08 August 2018, 14:14

Quote:

Originally Posted by StingRay

Better approach would be to change the subq.l #1 instruction to tst.l, that way you only have to change 1 byte and it's also easily possible to toggle that option on or off.

Good point, I was actually testing with "SUBQ.L #0,($223D4)" but the assembler didn't like me, hehe.

ross · 08 August 2018, 14:53

Quote:

Originally Posted by modrobert

Good point, I was actually testing with "SUBQ.L #0,($223D4)" but the assembler didn't like me, hehe.

Well, the assembler could insert 0 in the quick (3)bit encoding for the instruction but to gain a value the 0 is used as 8, so you can have only a subq from 1 to 8

modrobert · 08 August 2018, 15:34

I always found NOP to be extremely powerful despite the fact that is does nothing. The Romans suffered from not having zero naturally in their number system (although they did use it against modern popular belief), maybe SUBQ should allow immediate zero also? Just a thought...

BTW: $223D4 holds the number of lives, and it's a long word, if anyone still prefers a challenge. There is one caveat however, after going through some of the code, at some point it is actually checked against $223D8 with CMP.L, haven't checked the reason for the check. Anyway, probably best to set both addresses to the same value.

ross · 08 August 2018, 16:17

Quote:

Originally Posted by modrobert

I always found NOP to be extremely powerful despite the fact that is does nothing. The Romans suffered from not having zero naturally in their number system (although they did use it against modern popular belief), maybe SUBQ should allow immediate zero also? Just a thought...

Immediate zero is allowed, so you can use subi.l #0,$223D4 but is the same as tst.l

(and not directly usable in place because of the longer encoding).

haynor666 · 29 April 2019, 10:52

Ross, how is progress with patch? I'm really intersted in AGA version

ross · 29 April 2019, 11:09

Quote:

Originally Posted by haynor666

Ross, how is progress with patch? I'm really intersted in AGA version

Not a step forward

I am attracted to new things and I forget old ones.
When (and if ..) I will retire from real life work I will probably be able to finish everything I started

[as long as my brain hasn't already melted]

But thanks for reminding me, I put it back on the list.

haynor666 · 03 May 2019, 13:38

Thanks, fingers crossed then

Of out curiosity I've played beta version and works already really good.

haynor666 · 05 May 2019, 11:42

I also yesterday re-visited HD fix for Zool 2 (not WHDLoad install) and to my suprise it also works great with EC030 and 32 Mb fast

jotd · 05 May 2019, 13:51

Zool AGA has self-modifying code issues. I fixed some but didn't fix the corrupt character issue.

CD32 version has one more level & better controls and doesn't have the bug.

I now realize that I didn't publish my latest Zool fix with trainer and all... Time to do it

haynor666 · 05 May 2019, 17:25

Quote:

Originally Posted by jotd

Zool AGA has self-modifying code issues. I fixed some but didn't fix the corrupt character issue.

CD32 version has one more level & better controls and doesn't have the bug.

I now realize that I didn't publish my latest Zool fix with trainer and all... Time to do it

Cool, I would be happy to see this new level and game without those slowdowns. I never played Zool CD32 beyond level 2.

I didn't specify that I tried Zool 2 AGA HD (which it has far more slowdowns using WHDLoad than Zool AGA). As only JST and WHDLoad installs for Zool AGA.

haynor666 · 09 May 2019, 14:39

Tested CD32 version. Sadly slowdowns are still present :/

Anybody have some kind of CD32 rip that works from HD? JST version seems to also have slowdowns.

jotd · 09 May 2019, 23:17

I'm sure a CD32 rip exists. It's not difficult to do. No protection of any kind there. Just put lowlevel/nonvolatile libs and here you go (still need a CD32 joypad to play) There was probably one a long time ago.

Maybe I create a cd32launcher starter for that one: needs cd.device or it crashes, cd.device calls should be patched or you get a red screen and it crashes.

Retroplay · 10 May 2019, 00:05

Quote:

Originally Posted by haynor666

Tested CD32 version. Sadly slowdowns are still present :/

Anybody have some kind of CD32 rip that works from HD? JST version seems to also have slowdowns.

Zool CD32 JST v1.0 only support NTSC version, if you install PAL version you'll be greeted by a red screen telling you it's not suited for an NTSC CD32.

Which reminds me:
"Funnily" enough NTSC version crashes with an exception with latest v2.0 WHD slave.
Both PAL and NTSC works with v1.2 though.

[edit]
Scrap that, JST v1.1 took care of that.

haynor666 · 10 May 2019, 23:05

Today I've run Zool CD32 using SimCD32. Game has still slowdowns so unless there is something wrong with my A1200 with turbo card maybe game has to be like this.

Octopus66 · 21 May 2019, 00:35

Can anyone up the Zool ECS/OCS beta whdload ross prepared? Can't find it anywhere.. cheers

Retroplay · 21 May 2019, 16:03

They are on the FTP in this folder
/Commodore_Amiga/Retroplay/Commodore_Amiga_-_WHDLoad_-_Games_-_Beta_&_Unreleased/Z/

Octopus66 · 21 May 2019, 22:03

Thanks - nice one

Amigajay · 01 July 2020, 23:45

How do you get out of the options (OCS) menu, is this a slave issue or am i missing something?!

05 May 2019, 11:42	#90
haynor666 retro maniac Join Date: May 2002 Location: Tarnobrzeg/Poland Age: 45 Posts: 1,748	I also yesterday re-visited HD fix for Zool 2 (not WHDLoad install) and to my suprise it also works great with EC030 and 32 Mb fast Last edited by haynor666; 05 May 2019 at 17:23.

09 May 2019, 23:17	#94
jotd This cat is no more Join Date: Dec 2004 Location: FRANCE Age: 52 Posts: 8,164	I'm sure a CD32 rip exists. It's not difficult to do. No protection of any kind there. Just put lowlevel/nonvolatile libs and here you go (still need a CD32 joypad to play) There was probably one a long time ago. Maybe I create a cd32launcher starter for that one: needs cd.device or it crashes, cd.device calls should be patched or you get a red screen and it crashes. Last edited by jotd; 09 May 2019 at 23:23.

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08 August 2018, 15:34	#85
modrobert old bearded fool Join Date: Jan 2010 Location: Bangkok Age: 56 Posts: 775	I always found NOP to be extremely powerful despite the fact that is does nothing. The Romans suffered from not having zero naturally in their number system (although they did use it against modern popular belief), maybe SUBQ should allow immediate zero also? Just a thought... BTW: $223D4 holds the number of lives, and it's a long word, if anyone still prefers a challenge. There is one caveat however, after going through some of the code, at some point it is actually checked against $223D8 with CMP.L, haven't checked the reason for the check. Anyway, probably best to set both addresses to the same value.

29 April 2019, 10:52	#87
haynor666 retro maniac Join Date: May 2002 Location: Tarnobrzeg/Poland Age: 45 Posts: 1,748	Ross, how is progress with patch? I'm really intersted in AGA version

03 May 2019, 13:38	#89
haynor666 retro maniac Join Date: May 2002 Location: Tarnobrzeg/Poland Age: 45 Posts: 1,748	Thanks, fingers crossed then Of out curiosity I've played beta version and works already really good.

05 May 2019, 13:51	#91
jotd This cat is no more Join Date: Dec 2004 Location: FRANCE Age: 52 Posts: 8,164	Zool AGA has self-modifying code issues. I fixed some but didn't fix the corrupt character issue. CD32 version has one more level & better controls and doesn't have the bug. I now realize that I didn't publish my latest Zool fix with trainer and all... Time to do it

09 May 2019, 14:39	#93
haynor666 retro maniac Join Date: May 2002 Location: Tarnobrzeg/Poland Age: 45 Posts: 1,748	Tested CD32 version. Sadly slowdowns are still present :/ Anybody have some kind of CD32 rip that works from HD? JST version seems to also have slowdowns.

10 May 2019, 23:05	#96
haynor666 retro maniac Join Date: May 2002 Location: Tarnobrzeg/Poland Age: 45 Posts: 1,748	Today I've run Zool CD32 using SimCD32. Game has still slowdowns so unless there is something wrong with my A1200 with turbo card maybe game has to be like this.

21 May 2019, 00:35	#97
Octopus66 Registered User Join Date: Feb 2016 Location: London Posts: 335	Can anyone up the Zool ECS/OCS beta whdload ross prepared? Can't find it anywhere.. cheers

21 May 2019, 16:03	#98
Retroplay Lemon Curry ? Join Date: Sep 2004 Location: Denmark Age: 49 Posts: 4,079	They are on the FTP in this folder /Commodore_Amiga/Retroplay/Commodore_Amiga_-_WHDLoad_-_Games_-_Beta_&_Unreleased/Z/

21 May 2019, 22:03	#99
Octopus66 Registered User Join Date: Feb 2016 Location: London Posts: 335	Thanks - nice one

01 July 2020, 23:45	#100
Amigajay Registered User Join Date: Jan 2010 Location: > Posts: 2,882	How do you get out of the options (OCS) menu, is this a slave issue or am i missing something?!

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